Exhaust-cowl



UNITED STATES PATENT OFFICE.

RICHARD M. IANCOAST, OF CAMDEN, NEFF JERSEY.

EXHAUST-COWL.

SPECIFICATION forming part of Letters Patent No. 445,819, dated February l3, 1891.

Application filed April 2l, 1890. Serial No. 348,812. (N o model.)

To d/ZZ whom zt may concern.'

Be it known that I, RICHARD M. PANooAs'r, a citizen of the United States, and a resident of Camden, New Jersey, have invented certain Improvements in Exhaust Cowls, of which the following is a specification.

The object of Iny invention is to construct an exhaust-ventilator especially applicable for use on railway-cars and boats, both passenger and freight; butit can also be used to advantage on chimney or exhaust stacks of buildings as well.

Referring to the accompanying drawings, Figure l is a front view of my improved exhaust-ventilator. Fig. 2 is a side view. Fig. 3 is a sectional plan on the line 1 2, Fig. 1. Fig. 4 is a sectional elevation on the line 3 f Fig. 1. Fig. 5 is a sectional perspective View on the line 1 2, Fig. 1. Figs. 6, 7, 8, and 9 are diagrams illustrating the action of theventilator. Fig. is a face view showing myimproved ventilator adapted to the clear space of a passenger-car. Fig. 11 is a sectional elevation on the line 6 of a modification of my invention. Fig. 12 is a section on the line 7 S, Fig. 1l, Fig. 13 is a sectional view on the line 9 10, Fig. 14, illustrating a further modification of my invention. Fig. 111 is a transverse section on the line l1 12, Fig. 13. Fig. 15 is a sectional view on the line 13 14, Fig. 16, showing still another modification of my invention; and Fig. 16 is a transverse section on the line 15 16, Fig. 15.

I will refer in the first instance to Figs. 1, 2, 3, 4, and 5, in which is illustrated the eX- haust-ventilator in the preferred form, and is shown in Fig. 1 as mounted on the roof of a freight-car, exhausting the foul air `from the interior of the same; but it will be understood that the exhaust ventilator can be mounted on a chimney or other stationary object, orcan be placed at the side of a car or on the clear space of a passenger-coach, as clearly shown in Fig. 10, without departing from my invention. l

' A is the neck or stack, which is secured in any manner to the roof of the car, and mounted on this neck is the cowl B, having top and bottom plates a a. Mounted between these two plates are two sets of plates D E, the plates E forming a hood diamond-shaped in cross-sectiom'having vertical openings e e at the sides, as shown, to allow for the escape of foul air or smoke from the stack or flue.

The plates D D are mounted outside of the plates E, and are at a slightly-different angle, the plates being bent at a vertical line at (l and terminate at a point oc back of the line ot' the point f of the plates E, thus forming a space g g between the plates D and E for the passage of foul air or smoke from the stack or chimney, at the same time allowing free passage of air through the cowl.

It will be seen by referring to Figs. 3 to 5 that the plates D completely protect the openings e c, and as the outside air strikes the cowl, as indicated by the arrows in Fig. 3, it will pass around the end of the cowl, as shown, and tend to suck the foul air or smoke from the interior of the cowl through the passages e and g.

In the event of a heavy blow with rain .coming in the direction indicated by the arrows, Fig. 6, the air will pass throughvthe channels g g, between the plates D and E, forming a draft. through the cowl, as indicated by arrows, and to prevent the accidental inlet of rain-water to the interior of the cowl I provide vertical flanges t' t' at the sides of the openings e e, which project inward from the plates'E E. These flanges are ribbed at the end, and at the bottom of the cowl are plates 71. h, which project inward from the bottom plate A', and are flanged, as clearly shown in Figs. and 4, the plates carrying away the drip from the flanges i 1', preventing water o r dust from gaining access to the interior of the ventilator, which would be blown around the edge of the openings e and would fall into the cowl, but by providing lips t' this is entirelyprevented. In some instances the passage g is made flaring from the line y y outward, so as to allow for the free escape of air.

lVhen the ventilator is mounted on the roof of a car, it is situated with the points cl cl on the longitudinal line of the car, so that the outside air will strike the cowl, as shown in Fig. 3, exhausting the air from the interior of the cowl, also shown by the arrows in Fig. 3, and thus positively preventing the ingress of rain-water, cinders, dac., to the interior of the cowl; but when the cowl is used on stationary objects, such as a chimney or Ventilating# IOO stack, it can be mounted in any position, as it matters not in' what directionl theair strikes it it will exhaust the air from the in terior of the cowl, as clearly shownv in the diagrams, Figs. 6, 7, 8, and '9. When the cowl is used at the side of a car or to ventilate the clear space-of a passenger-car, I prefer to construct it as shown in Figs. Il and 12, the points f f being on a vertical line. The ends of the diamond-shaped cowl formed by the plates E are open, and the defiectingplate F isplacedbelow the .upper opening, so

as to prevent the ingress of cinders or rain through said opening into the neck A of the cowl. This would only occur in the event of the raincoming at an angle through the-slot, as shown by the dotted arrow` in Fig. lll'. The; raiuwillbedei'lecied'. and willl fallV into the trough#shapedlowerportion of the cowl and outthrough the lower opening. The upperopeningK is somewhatnarrower than the lower.` opening and the space betweenI the Walls of'` the cowl and; the delecting-plate is somewhat wid'erfthan-.the upper openin, g;,so` that ifI largecinders shouldapass through the upper opening'they Wouldr'notclog the other openings,vb'ut would' readilypassaway from the cowl. If. alsoformV in theneck- A of the cowl inclined dellectingribs 7.o 7 ;,.Which` Will throw. oianywater or cinders that mayvgain accessto the interior 'ofthe cowl.

In Fig..12 Ie have dispensed with the flanges z t..

In Figs. 13 and 14E I have shown another. modification ofl my invention, in which. only thelowerlangesft' are used, and the extreme top and. bottom. portions of' thev diamond.- shapedcowlare closed,.with1the exception of a smallopeninglfinthe bottomto allow for thedischarge-.ot water or cinders that may gainy access to the cowl;f

In Figs. 15 and I6 -I have shown along slot in thelower portionof thel diamond-shaped cowl, which also acts'. asfanv exhaust-opening, aswell as an out-let .for water.

The height and'width'of the cowl will vary' according. to lthe position in. whichlit isplaced, andi in'some'cases the proportion and inolines willY vary slightly without departing from-my invention.

Iy claim asmyy invention- 1'. The combination, in an. exhaust-cowl, ofthe diamond-shapedi cowl laving exitsin the front and rear sides with the outer deflectingcasing comprising front and rear plates shielding saideXits and extendingonlyto a point back of the line of the points of the dia- Amond cowl-body and inclined so as to form l center toward the ends through the dischargepassages, substantially as described.

2. rlhe combination of the neck A, plates d a', plates E, forming a diamond-shaped cowl-body having openings e e, deliectingplates D, and flanges projecting inward from the plates E at the openings@ e, said flanges having projecting ribs or beads at their inner edges,-substantially as and for the purpose set forth.

3.V The combination, in an exhaust-cowl, of the diamondshapedcowl -body having its longa-xis in a vertical plane and havingfexits aty the vsides of the body,lwith plates shielding said-exits, said cowl-body having atthe bottom an opening for the discharge ot'f water and air, substantially asset forth.

4:'. The combination, inanlexhanst-cowl, of the diamondrshaped' cowl-body having its long axis ina vertical plane and having openings atl thesides of the body, with plates shielding said. openings,l said cowl-body having openingsat the upperV andlower sharpends, and a detlecting-plate situated directly below the upperopening, substantiallyasand forY the purpose set forth.

o. Thecombination, in an exhaust-cowl7 of the vertical platesE, forming ahood diamond-shapedin cross-section and having ex its in thefront andl rear sides, with the outer ver-tical plates'D, shielding said exits-and ex tending only to aivpoint back ofthe pointsof the diamond! cowl-body andinclined so as to two subscribing` witnesses.`

RICHARD M'. PANCOAST. Witnesses:

HENRY HowsoN, HARRY SMITH.

IOO 

